Rockwell Automation 8510 AC Spindle Drive System User Manual - Manual (Page 121)

Troubleshooting
Chapter 11
11-117
The gate drive fuses can not be visually checked to determine if they have
malfunctioned. The fuse element is too small to allow a reliable visual
check. Use an ohmmeter to test these fuses (with power off & out of cir-
cuit).
ATTENTION: Do not apply power to the drive if any of the
IGBT gate drive fuses have opened or been removed. The
IGBT power module will be damaged if power is applied
without the module gate leads connected to the control circuitry.
!
Fault Diagnostics System As explained in Chapter 10, the integral display and programming system
is used to display drive diagnostic messages. When a fault occurs, the
display will automatically change (within about 2 seconds) to the Current
Fault display. If any key is pressed, the display will return to its previous
state. Through the DIAGNOSTICS menu, the current fault and a fault
history showing the eight (8) most recent faults can be accessed. The fault
history does not contain date/time information and can not be reset.
The tables found later in this chapter group the fault conditions or the fault
display messages by general classification, describe the specific fault, and
show probable causes and possible solutions. The general groupings are:
· Problems that occur when AC power is applied Table 11.D page 11-120
· Problems that occur when Drive Enable is applied Table 11.E page 11-122
· Problems that occur while the drive is operating Table 11.F page 11-125
· Problems that occur during spindle orient Table 11.G page 11-129
· Other faults that indicate a control hardware malfunction Table 11.H page 11-131
· Problems specifically related to the I/O Board Table 11.I page 11-133
· Problems caused by programming errors Table 11.J page 11-134
For each fault condition or operating problem, the causes and solutions are
listed in order of decreasing probability of occurrence or increasing
complexity of required tests.
To aid in locating a specific fault, an alphabetized list of all fault display
messages and a Problem Number is provided. This listing can be used to
quickly locate an explanation of the fault in the tables that follow.
Display Text Line 1 Display Text Line 2 Problem Number
Current Fault Abs Overspeed 16
Current Fault AC Phase Loss 4, 19
Current Fault Bad Comb M & D 52
Current Fault Bad PG Count 27
Current Fault Bad PG Marker 26
Current Fault Bad PG Output 28
Current Fault Bus Overvoltg 17
Current Fault Bus Undervolt 18
Current Fault Convrtr Short 9
Current Fault Data Conflict 14
Current Fault Drive Overtemp 21
Current Fault Hi Accel Rate 40
Current Fault Hi Positn Cmd 41